I offer used computers and custom-built computers. Used computers typically go $75-$150. I might even buy your old one, even if it needs repair.
I also offer custom-built computers. Its very difficult to compete with the name brand computers. But what I do offer with mine is support, unlike the big brands whose support is often found lacking. Prices for new computers vary based on your needs and the prices for parts. For that reason, I don't feel comfortable posting any prices here. But, call any time for a quote!