In Canada, some stores charge tax and others do not. In addition, tax varies from one province or territory to the other. It would be helpful to have a multiplier for each store (as with ITAD) to include tax (e.g. 1.15 for 15%) so that the pricing will be properly adjusted. Often, I have stores like a Humble Bundle or GMG show up as better prices, when they are not for me as I have to include taxes on them, while a store like Fanatical or GG, I don’t.
This could also be used to include custom discounts to stores that are not included in the normally-found price (e.g. Fanatical’s 5% off coupons).
