BeachPlumCottage says
GoTo: Don't you have to print them at home though? I don't have a printer / ink....
~~~Sorry--missed your post earlier. You do have to print them at home, but the savings really do add up and it saves tons of time & energy shipping from home--it's a worthy investment.
If you don't have a printer, you can often get one for free from friends/family who get a new computer that comes with a printer or when they upgrade their old one. Often folks will give away their old one when they get a new computer bundle, or if their old one is a good printer they'll give away the cheap-o free one that came with their new computer.
If none of your friends/family have an extra, you can try groups like Freecycle (
http://www.freecycle.org ) or search Yahoo groups for Freeshare and find folks in your local area that are getting rid of things they don't need. (The idea is to recycle used but usable goods rather than having them end up in a landfill.) You can even post requests for items you need.
As far as ink, most printers will use refilled ink cartridges just fine & that's much less expensive--you can get them refilled at local stores (like Walgreens) or you can get inkjet refill kits online real cheap and use them to refill a working cartridge yourself two or three times for around $10. That'll keep you in labels for months.