Shareasale.com? I'm a merchant

Hi,

I have a high-ticket wellness product brand thats already a success in the US.
We have our own affiliate program and it does okay, but not very good, just 1-2 actively selling affiliates out of 150..

anyways i noticed shareasale.com. they seem to have a large network. do you think its worth investing the bloody 650? im tired of spending on ad campaigns that bring low quality, bad comparision, but u know wat i mean!

details on any other networks to propogate our products are welcome too.

thanks

*bump*
any1 tried shareasale.com as merchant?