₦airaland Forum

I recently had a website built for me that I hope was very cheap, I sure it was. I am very happy with the site but they also have an offer of 2G hosting for $20 every year, reduced to $20 because they built the site.
Am completely lost with regard to hosting, I have a retail site with about 500 products. I understand and don't believe there is such a thing as unlimited hosting.
I want to know if this is cheap enough and big enough for what I need?