Unless you are sending hundreds of pieces of post per week, franking machines will cost you much more than stamps. Neopost state 15 items per day, this is no where near the right number. Once you have purchased the machine they then tell you that you have to pay £90+ for replacement ink cartridges that you can only buy from them, the ink only seems to last about 1000 impressions! Then there's the annual maintenance charges and rate downloads that run into hundreds of pounds. Do your research and check that you regularly send over 100 pieces of mail per week, otherwise avoid like the plague.