Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
fiberglass cut-off wheels 16, plastic case 1, sillicon carbide grinding wheels 6, brass wheel brush 1, flap wheel 4, aluminum oxide grinding stones 6, polishing compound 1, wrench 1, sanding disc with back adhesive 40, silicon carbide grinding stones 4, rubber emery wheels 2, rubber grinding stones 6, emery cut-off wheels 36, aluminum oxide grinding wheels 6, dressing stone 1, sanding bands 52, felt tip 1, collets 3, stainless steel brushes 3, felt polishing wheels 8, sanding shanks 3, sanding discs 40, mandrel wheels 3, sucking disc 1, bristle brushe 3, diamond cutters 12, diamond wheels 2, HSS twist drill bits 9, white alundum grinding wheels 6
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Too bad there’s no coupon right now in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG7021, BGVDay10%off, BG2020NS, bGhOnEy10, BGherra, BGBFCR32
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Here is price history (for all/most countries) for HILDA 276pcs Grinding Sanding Polishing Abrasive Tool Set.
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)).