Often the same day as received but it can be 1-2 or more days due to Holidays, weekends, pandemics or just too much work. Since May 2013 our post office is only open 4 hours a day which isn't helpful.
Priority mail will get your blades here from Florida to New Hampshire often in 2 days and California 2-4 days. The cheapest shipping from other states than PA for blades, scissors or small clippers is the Priority Mail Small Flat rate box or the larger Padded flat rate bag. If you are not in a hurry using Ground Advantage can save you some money. Shipping is $10.75 (changes as post service raises rates) for the small flat rate box from anywhere. The postal service also has free priority boxes available in many sizes. If you are not in a hurry using non priority boxes and bags and the new also available Ground Advantage can save you money on shipping.
For Larger items, or larger quanities the Medium Flat Rate box and the Large Flat Rate box can save you money. Work received on the weekend will likely not be shipped until Monday due to short 2-hour Saturday postal hours in my area. If you are not in a rush that is helpful to know so I can schedule appropriately. UPS and FedEx in some cases can be a cheaper way to send for larger heavier items.