re: Etiquette on tipping movers

Moved from Lafayette to Houston last weekend with 4 movers moving a family of 5. They packed us for 3 days then unpacked for a day after that. They moved lumber I had in my yard, and some heavy furniture I bought in Houston up the stairs. They went above and beyond so I tipped the 4 of them $100 each. Probably too much but I feel like they each earned it.