Kovea is a well known quality outdoor gear maker and supplies parts and complete stoves to MSR. They are on the high side for prices. Several similar canister top stoves can be found below $10
Camping Picnic BBQ Gas Stove 3000W F1S4 I have a $7 burner very similar to the Kovea you listed, smaller than my PocketRocket and works/heats the same.
If your looking for established brands search for Kovea, Maple Fire, Alocs, Olicamp, BRS, among other more customary brands. Off brands that I have all were good burners, some have plastic mountings and thin SS pot supports. I'll buy off brand for odd designs, my preference goes to remote tanks.
For liquid fuel remote tank stoves stick with well known brands MSR, Optimus, Primus. The Oriental versions do not have the quality and use some odd size o-rings, fuel bottles, and thread sizes.
butthead