To get better suggestions you probably need to let us know what decent priced means.

Nokia 5300 should be a good pick, not very expensive at all, comes with a 1gb flash card for your mp3 files and a usb wire to upload them from your computer so you dont have to purchase them.

it depend to the brand and how much you can go.
check ebay or samstores.com for brand and price.
for me i like the nokia Nseries.

Could anyone suggest a decent priced phone that will accept MP3 quality ringtones that can be uploaded from a pc?

Thanks