I've put it off as long as I could, but... postage prices keep climbing, so as of today, first class shipping is going up to $4.25, with free shipping kicking in at $40. That brings me back to just about breaking even on shipping expenses, which is where I've always tried to keep my rates. 

(As always, you can use coupon code COMBINE if you already have an order hanging out in my shipping queue, or if you have a monthly subscription and don't mind waiting until your next shipment to get whatever you're ordering.)