We do have a test site and this is for an adult toy site so if that does not work for you please do not bid.
I am not sure if this is possible but what I would like to do is create a system that would:
1.) Track prices of competitors.
2.) Be able to report that compairs prices.
3.) Have email report sent daily with all changes in pricing.
4.) Allow me to click a button to match prices or click each product individually.
I think it would be easier if I would manually add products for the script to watch. Not sure the best way to set that up. That would be up to you as long as its easy to do I am ok with it.
If you need urls of competitors to help find how they list there prices so the script can track their prices I can do that.