Yes, you can buy a single photo or just a few prints. However, the only way to have a digital version is to buy the expensive package. Even if you buy a few prints, they won't give you the digital versions of those (you must scan them, if you want to share them on social media).
The individual prints are also very expensive. The pricing is structured I a way that if you want one print is very expensive. For not much more you can buy a package of 5 prints. For not much more you can buy the digital package. For not much more you can buy a few prints with the digital package. For not much more the full uber expensive package.
You see what they did? With every upgrade it seems you're getting more value, but you also inch into spending an incredible amount of money. Clever and very dangerous for your wallet.