I mail birthday, sympathy & anniv. cards with $$ tucked in. Never had a single problem. I pay my bills & taxes through the mail also, again, never a problem. I mail greeting cards to relatives in Europe for $1, which I think is an incredible bargain. Our meds come 1,500 miles through the mail system & it amazes me how I can order it & 3-4 days later it’s in my hands. Our mail carrier is a kind, pleasant guy.
I tried paying for our newspaper online & they had it so screwed up with access to my bank account, I thought I’d never get it straightened out. To each his own, I guess.
When I worked, I had a chart in my office that compared different carrier rates. All carriers do a fantastic job, but USPS was the cheapest, that was a few years ago so I can’t say if they still are or not.
Cheapest haircut I can get is $12 (that’s 24 stamps). Going rate for a beer @ our neighborhood bar is $3.00 (that’s Happy Hour 1/2 price) & most people drink 2, so a couple will most likely spend $15, including $3.00 tip (or 30 stamps).
Sorry for the rant, just my observation.