Setup a shell company in Bermuda that does the scrapping for you and then claim you buy the data from them. When they approach you just tell them you have a NDA and can't disclose the company. That'll keep them at bay for awhile... then when you're forced to disclose, they'll spend the rest of their time chasing a shell company in Bermuda.
OR.....
Just create a firefox extension that scrapes the pages for your users.
There's many ways to keep this going while giving them the middle finger and serving your users.
Also, laws only matter when the outcome doesn't to the people in charge. Just because "the law is on your side" doesn't mean you'll win even if you could afford it, because laws don't magically rule on their own. It is judges, with all their pettiness and cravenness and nepotism, which rule.
If your data infringes copyright they will go after you not your fictitious shell company because it doesn't matter where you got the copyright infringing material it matters whether you illegally distributed it.
OR.....
Just create a firefox extension that scrapes the pages for your users.
There's many ways to keep this going while giving them the middle finger and serving your users.