500 albums is going to take a huge amount of time and effort to convert, so be prepared for that. Why not sell the vinyl that has little value, keep some rare, valuable or sentimental records, then get a subscription to a music streaming service instead of shelling out over £200 on a USB turntable.
PS I converted aroung 75 albums using my old tuntable before I sold it off by using a £60 DAC / ADC and recorded everything at 96kHz / 24 bit on to a computer. The benefit of putting it on a computer is that you can tag and label all the tracks and add the proper album artwork.