$6.99 – WEST BIKING 100PSI Mini Bicycle Air Pump Portable Hand Pump Hose MTB Mountain Road Universal Schrader Presta Valve Waterproof Tire Inflator for Ball Cycling – Black.
According to my DB the lowest price is $6.99 for WEST BIKING 100PSI Mini Bicycle Air Pump (in Banggood). Just check coupons out (with price alert and history). What is best price?
Latest price update (UTC time):
Banggood ($6.99)
Banggood warehouse is located in China. I have no active coupons for you right now. Is it expensive? Pretty sweet, this is the lowest price I have ever noted for this product!
Link: Banggood product page
Price: $6.99
Additional Banggood coupons: first page and second page
This is the best price ever noted in my database!
Old coupons (from the oldest to the newest): BGTYOCT7
(you can check these old coupons out, but these probably won’t work)
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.
Price history and price alert
Here is price history (for all/most countries) for WEST BIKING 100PSI Mini Bicycle Air Pump. The lowest price was: $6.99.
Price records source(s): 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)).