Manual Lock Pick Gun Kit (Banggood, Aliexpress: 3 pick blades and 1 tension wrench, strong jump head and big adjustable extent, for Slotted and Double Track Car Locks (the best price with coupon)).
Just check coupons out (with price alert and history). Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
.jpg "Best price for Manual Lock Pick Gun Kit discount")
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($14.71): CityadsTool
2. ($16.27): BG00c906
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGherra, BGTool15, BGLOCKPICK16, BGLOCKPICK, BG8a7644
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Check out price history chart (for all/most countries) for Manual Lock Pick Gun Kit. The lowest price was: $7.99.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).