Sounds like you fellers got some good deals!
for the few not able to find deals like that we have to make do the best way we can and if I can save some money
I live over 420 Air miles away from a urban center (Anchorage) that would support a tool outlet that affords deals such as your's, thus limiting my options, Ive been to yard sales and lots of Makita,Dewalt, Milwalkie cordless tools with and without batteries and chargers and varying combinations of that.
Making do best one can. repairing what you have can be a positive thing.
Two years back while mowing in a corner the yard I'd never mowed before I hit a steel lot marker pin ruining my favorite lawn mower bet the blade and sheard the key and was burning oil bad & shuddering so I looked into replacing the motor and it was darn near $300 for a replacement not includeing shipping to bush alaska.
I bought a new WeedEater push mower from Sears for $110 and this model had a larger engine than the old one.
By the time I'd tore down the old motor and replaced the parts I would have been better off getting a new one.
I miss that old Craftsman mower, it never clogged and the carrage rolled great.
New mower more powerfull but cloggs and doesent roll well (like a sack of taters)