Searching for a Budget Numpad Kit - Pawb.Social

I’ve been interested in trying a custom mechanical keyboard, but I already have a 60% (maybe 65%?) keyboard that I don’t have any issues with, so I thought making a numpad or macro pad would be a good (and maybe cheaper) alternative. I’ve been having a hard time finding any that don’t require a soldering iron and are less than $70ish. Any good budget suggestions? I am up for assembling or disassembling things (or even programming), I just don’t have a soldering iron.