When I was updating this page the price was 29.99 USD for Drillpro Self Centering Dowelling Jig Metric Dowel 6/8/10mm (in Banggood). Just check coupons out (with price alert and history). Best price?
Latest price update (UTC time):
Banggood (29.99 USD)
Banggood warehouse is located in China. I have no active coupons for you right now. Isn’t it too expensive? IMHO this is a good price, coz it’s lower than average (32.66 USD)
Link: Banggood product page
Price: 29.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG409196, BG17331, BGDRB18, BG052856, BGherra, BGUS2856A, BG82d3bd, BGd40bb3, BG2f32c8, BGWT15, BGa0b557, BG442aa8, BGWDT15, BG20236Tool
(there’s a little possibility that old coupon will work)
Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Drillpro Self Centering Dowelling Jig Metric Dowel 6/8/10mm.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).