I've set up the module and added four price points for a product: 1-4 ($35), 5-9 ($31.50), 10-24 ($29.75) and 25-Unlimited ($28.00).
I add the product to my cart and if I change the quantity to 4, the price correctly remains at $35.00. But if I change it to 6, instead of setting to $31.50, it resets to $28.35. When I set the quantity to 11, the price resets to $26.78 instead of $29.75, and when I set the quantity to 26 or higher, it resets the price to $25.20 instead of $28.00.
Any idea what might be causing these strange calculations?