Looks great, but your pricing sucks. $19, seriously? Multiply that 10-20-50 fold.
Also, $149 is nothing for a business. If you're selling to a financial business, whose $100-200-300k paid employees use Excel a lot, it's easily worth $500-1,000 per license (or more!). You need to price for value in the context in which your software is being used.
The trial version should be sufficient to convince people to upgrade -- asking for an e-mail address before initiating the download probably isn't a bad idea. :-)
P.S. And quit claiming you're a noob. You're in business now. So get to reading on positioning your product and doing some direct outreach.
Great job! Seriously
They have a product like yours but will do C#/F#/VB instead of SQL (in your case). Their pricing is pretty heavy ;).