So many people have computers and printers people expect the letter to be printed.On the dishonest part, I will let you decide. 

Personalized letters are huge and easier to do with the variable printing capabilities of many printers today.

I then made a hand written letter on printer paper and started coping it and writing in address and name.

Looked like printer's rollers were dirty.

Your business mail entry office can provide more information on discounts.Mailing From More Than One PlaceGenerally, you must hold a mailing permit and pay an annual mailing fee at every Post Office where you want to enter and pay for your mail.So if you want to keep mailing every year, there is an annual fee; if you want to mail from multiple POs (if you use two different printers and each enter their mail into a different PO) and so on.Rather than getting your own permit you can use the printer's permit for a fee and they can take care of everything.

I buy my printers on Amazon and refill ink/cartridges on supermediastore.com.

It is a ton of work sourcing the information as each county in my state has different zoning codes, different assessor search functions they use by county, etc.I am using a white envelope mailed every month and we were using labels but switched to printing out from the printer on the envelopes because it's cheaper and I am not limited on a label size with what I can print.

These are all being printed from an Inkjet printer and as such the ink bleeds a tad just like a pen.

I would like to see a better scanner / printer / copier that's made to live in someones car.

We use Standard Bulk Rate for all our postcards and they take about 10 to 12 days to be delivered (from the time our printer delivers them to the post office in California).