As the price of a first class stamp has gone up from 46p to 60p - an increase of 30% - I've had to review the prices I'm charging for the anti-junk mail stickers and other goodies I'm selling via the sticker shop on the Stop Junk Mail website.

It's not all bad news. For letterbox stickers I was charging £1 per sticker plus 50p for postage and packaging. I've increased the postage fee to 60p but at the same time reduced the price of stickers to just 90p. In other words, if you buy a sticker you still pay £1.50. And, if you buy more than one sticker you'll pay less. Buying two stickers, for instance, used to cost (2 x £1 + 50p =) £2.50. This is now (2 x 90p + 60p =) £2.40.

Other prices have gone up. The return to sender stamper can only be sent as a packet, and Royal Mail has increased the price for sending small packages from £1.97 to £2.70. I've therefore increased the postage fee from £2.00 to £2.70.

A word about Royal Mail's price increases, then? I'm actually not too bothered about it. Many online sellers have complained about the new prices, but then quite a few sellers out there charge postage fees that are completely disproportionate to what they pay Royal Mail. This is much more damaging for online trading then the increase in stamp prices.