However, since January of this year, Namesilo has also significantly raised the prices of renewal domains, so considering that I have a large number of domains on them, I am slowly moving them to a cheaper registry. The price difference is almost -50%
I think they are following the lead of Namecheap; they offer up to 70% on domains, and then when you renew it, they increase the price to 200% or even more; this is the catch, so you will prefer to buy on their platform. Good strategy indeed.
I got a TLD domain last year for $3 in their sales and renews it yearly for $15. I have to look for a renewal code to lower the price, but its not really the price but the kind of support Namecheap is giving to their clients; they have one of the best support in the industry.