Like any professional painter, you work hard to improve, exhibit, develop, build your reputation and always aiming to push your prices in one direction…upwards.
The market does this by itself of course as more artworks are sold to collectors, museums and corporations. Often though, as the artist, you don’t benefit from increases in value of your earlier works and this is fine, it’s a good problem to have!
However, if you see a painting I have for sale that you prefer and you’ve already bought one of mine, either from me or through a gallery, I’d be keen to have my work back. Whether you’re downsizing, upsizing, whatever the reason, if you’re looking to sell one of my earlier pieces and buy another, then I’ll guarantee to give you at least your original purchase price back against a new piece of artwork.
This also applies in the future to any work purchased now.