It really depends on how much money you need and what stage you are at. From your site, it looks like it's functional and customers can place orders. So, it appears to me that your company is now launched. Now, the trick is getting people to buy.
You probably now need more marketing money than development money to get people to show up to your site. I would recommend you figure out how much money you need to become profitable (if you are not already) and then figure out from there.
To give you some ball park numbers. Most angels will invest under $100k US. Some more but typically it's under that. A VC pushes you into the big money (say $1M-$5M). You might also want to consider Strategic investors (i.e. established companies). Go look for a company that would benefit from your technology/company. Sometimes even a profitable competitor might want to invest to expand their market, etc.
A strategic investor could put $1M to $3M in or maybe just buy you. It all depends on the fit and what stage the company is at.