When things like that happen to me, I feel like it's a test from God (crazy christian).
Up here in Canada we have the hated GST (the Goods and Services Tax). I asked a heating contractor what was the final bill after installing our new furnace. He gave me a price if I paid by cheque and a price, minus the GST, if I paid by cash. I chose the full price by cheque. (That money belongs to the government). If everyone paid their taxes honestly, their taxes could go down.
Starkeeper