One of the very best investments you can make is a good label printer. The Dymo line is perhaps the best choice. There is no ink – these are thermal – they are fast and the printed label is clear and sharp. I have a Dymo Dual Turbo which has printed around 10,000 labels, I did have one fail, they sent me a new one. The Dual is overkill for me I almost never use the second side. Here are a couple. The 460 is a good choice the Turbo is basically the same only faster which will not matter until you get to doing large numbers of labels.
This is really a super deluxe package – a Dymo Dual turbo and a Dymo 5lb scale – I have this combo – the scale connects to your computer so you can upgrade the postage costs. It give you the weight on its own screen and can give you postage. Probably overkill all the way around. A single Dymo will work just fine and there are some good electronic scales available for under $30. All you will really need is the shipping weight when you use Click and Ship or Pay Pal multi order shipping.