docs: update totals and add smoke stopper

README.md

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 ## BOM
 
-| Part                         | Quantity | Price  | Link                                                                                                          | Notes                                                           |
-| ---------------------------- | -------- | ------ | ------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------- |
-| dji goggles n3               | 1        | $229   | [dji](https://store.dji.com/product/dji-goggles-3-refurbished-unit?from=pages-refurbished&vid=182571)         |
-|                              |
-| air unit pro                 | 1        | $229   | [b&h](https://www.bhphotovideo.com/c/product/1870780-REG/dji_cp_fp_00000233_01_o4_air_unit_pro.html)          |
-|                              |
-| ikon 3.5 evo frame           | 1        | $43.95 | [avion rc](https://avionrc.com/products/Nexa-3.5-EVO-PRO-Frame-Kit-.html)                                     |
-| 2 extra arms                 | 1        | $10.00 | [avion rc](https://avionrc.com/products/Nexa-3.5-EVO-PRO-Frame-Kit-.html)                                     | addon to the main frame                                         |
-|                              |
-| radiomaster elrs transmitter | 1        | $18.99 | [getfpv](https://www.getfpv.com/radiomaster-rp1-v2-expresslrs-2-4ghz-nano-receiver-w-65mm-ufl-t-antenna.html) |
-| xing2 1404 motors            | 4        | $23.49 | [getfpv](https://www.getfpv.com/iflight-xing2-1404-3000kv-3800kv-4600kv-toothpick-motor.html)                 |
-| Gemfan 3525 props            | 2        | $3.49  | [getfpv](https://www.getfpv.com/gemfan-3525-hurricane-3-blade-propeller-w-m5-adapters-set-of-4-1-5mm.html)    |
-| speedybee f405 aio           | 1        | $55.99 | [speedybee](https://www.speedybee.com/speedybee-f405-aio-40a-bluejay-25-5x25-5-3-6s-flight-controller/)       | comes with the screws, standoffs, xt30 pigtail, and dji pigtail |
-| vifly finder 2 beeper        | 1        | $19.49 | [getfpv](https://www.getfpv.com/vifly-finder-2-drone-buzzer.html)                                             |
-|                              |
-| GNB 850mah 120c batteries    | 1        | $41.99 | [amazon](https://www.amazon.com/dp/B0B68MV9LD)                                                                |
-|                              |
+| Part | Quantity | Price  | Link | Notes |
+| --- | --- | --- | --- | --- |
+| dji goggles n3 | 1 | $229 | [dji](https://store.dji.com/product/dji-goggles-3-refurbished-unit?from=pages-refurbished&vid=182571) |
+| |
+| air unit pro | 1 | $229 | [b&h](https://www.bhphotovideo.com/c/product/1870780-REG/dji_cp_fp_00000233_01_o4_air_unit_pro.html) |
+| |
+| ikon 3.5 evo frame | 1 | $43.95 | [avion rc](https://avionrc.com/products/Nexa-3.5-EVO-PRO-Frame-Kit-.html) |
+| |
+| radiomaster elrs transmitter | 1 | $18.99 | [getfpv](https://www.getfpv.com/radiomaster-rp1-v2-expresslrs-2-4ghz-nano-receiver-w-65mm-ufl-t-antenna.html) |
+| xing2 1404 motors | 4 | $23.49 | [getfpv](https://www.getfpv.com/iflight-xing2-1404-3000kv-3800kv-4600kv-toothpick-motor.html) |
+| Gemfan 3525 props | 2 | $3.49  | [getfpv](https://www.getfpv.com/gemfan-3525-hurricane-3-blade-propeller-w-m5-adapters-set-of-4-1-5mm.html) |
+| speedybee f405 aio | 1 | $55.99 | [speedybee](https://www.speedybee.com/speedybee-f405-aio-40a-bluejay-25-5x25-5-3-6s-flight-controller/) | comes with the screws, standoffs, xt30 pigtail, and dji pigtail |
+| vifly finder 2 beeper | 1 | $19.49 | [getfpv](https://www.getfpv.com/vifly-finder-2-drone-buzzer.html) |
+| |
+| BetaFPV Lava Series 4s 850mah | 1 | $41.99 | [betafpv](https://betafpv.com/products/lava-series-4s-850mah-lipo-battery?_pos=9&_sid=6d8f817f6&_ss=r) |
+| |
+| ShortSaver v2 | 1 | $12.99 | [amazon](https://www.amazon.com/dp/B088TVVNVM) |
 
-Total: `$749.35`  
-Subtotal (without DJI equipment): `$291.35`
+Total: `$752.24`  
+Subtotal (without DJI equipment): `$294.34`
 
 **Split by store:**  
-GetFPV: `$157.04` (exc. tax `$133.80`) `[already bought]`  
-Avion RC: `$73.95` (`$15` dollars shipping) `[contacting about a discount]`  
-SpeedyBee: `$81.19` (`$25.20` in import duties) `[already bought]`  
-DJI: `$229` (`$16.03` in tax) `[already bought]`  
-B&H: `$247.32` `[already bought]`  
-Amazon: `$41.99`
+GetFPV: `$157.04`  
+Avion RC: `$73.95`  
+SpeedyBee: `$81.19`  
+DJI: `$229`  
+B&H: `$247.32`  
+Amazon: `$12.99`  
+BetaFPV: `$54.99`  
 
-All together with tax and shipping: `$819.53`
+All together with tax and shipping: `$856.48`  
 
 ## Build Notes