What are your recommendations on self-hosted e-commerce solutions? Looking at starting up an online store but don’t know what providers there are/what to go to with.

That largely depends on the size of your project. If you need to go as complex as possible, are ready to spend loads of money and sacrifice a great deal of time and speed, go with Magento. I used to work with it and can tell you, while it's extremely slow and needs lots of work to get going, it's a s flexible as it gets. Its framework is exotic though and you'll have to be /become /employ a specialist for it to do stuff.

Magento