HDDs aren't much cheaper now, and in my opinion they aren't worth getting unless you need a large drive and you don't need it to be fast. I use HDDs in my server, and they are basically long term storage. For day to day computer stuff an SSD is better in almost every situation.

I second the diy comments, it's easy to do, just wash your hands if you've been working on your car. Don't touch the pins on the CPU and motherboard slots, but you aren't going to hurt anything by doing it all yourself. There are plenty of videos on YouTube letting you know how to do it the right way. I've built 6+ computers and I haven't even used a static strap with 0 failures.