Yes, artists that upload music on Bandcamp can make their albums purchasable for the fans. Go to any album, and you will notice an option for 'Buy Now' along with the pricing of that album. Buying it will allow you to save all the songs from the album in high quality and any format you want. You can pay using PayPal, debit card or credit card and once you make the payment, the artist will also receive their share of the profit for the hard work they have put into creating original music.