In December 2022, I purchased the RZTK CVT 2520HP convector from the online store Rozetka. I needed to heat a room in a house that had no heating at all.
I was lucky, as there were no problems with electricity supply at that time at the address. So the RZTK CVT 2520HP worked almost around the clock (for about two months).
All three modes work. Power is 750/1250/2000 W. Heats the air quickly. Follow safety rules.
After purchasing the RZTK CVT 2520HP, I noticed the UP! (Underprice) CH-2030 convector at Epicenter. All details, except for branding, are identical. The only slight difference is in price.
I also saw the Edler EDHT-7750 convector at Allo, which is also very similar to the RZTK CVT 2520HP and UP! (Underprice) CH-2030.
My assumption is that all three (and maybe more options on the market) are branded (with printed logos on the product) convectors from Alibaba.
The wholesale price on Alibaba is $7.5 each. This is about 5-7 times lower than the price in local stores. This is normal. It still needs to be delivered, sold, and profit made.
But I think a way to save is to look through alternatives of similar products in large network stores. Because the product is the same, but the price can vary significantly. For example, currently, the difference between Edler (Allo) and Up (Epicenter) is 900 hryvnias (Epicenter 2199 UAH and Allo 1299 UAH).