If it's a big box store they're used to people showing up with hybrid cars wanting to get some plywood home and will usually cut for free. If it's a lumber yard they're used to people showing up with trucks and trailers and buying a ton of wood and will probably charge you. Change sucks but I wouldn't sweat the $10 especially if you've always liked the place and their wood in the past. Crap, if some people actually figured the numbers, it cost them $12 to cut a $2 2x4 "dead nuts on" with their Kapex.
I totally agree with that. But I also can't blame them for charging for a service. You want plywood, they have plywood, you pay for plywood, they give you plywood. That's the end of the transaction as far as I'm concerned and anything that happens afterward is totally unrelated. They pay their employees by the hour and if it takes an employee X minutes to do something it costs them X dollars to have it done. I also agree that ten bucks is a pretty stupid number for a rip...but when's the last time you were surprised that something was cheaper than you expected it to be? Unhelpful side note...I can't imagine living life without a pickup truck for a million billion reasons. Especially when it snows 11 months out of the year.