Carphone is flogging it from tomorrow for just £60 on pay as you go, or £70 if you're a new customer, including £10 of top-up. It's been on sale in Argos for a few weeks for £130 SIM-free, but this is less than half price just for getting it with a SIM card.
But check out these specs: Android 4.1 Jelly Bean, 1GHz dual-core processor, 4-inch 800x480-pixel screen and a 5-megapixel camera. Not bad at all!
To put that screen in context, its 233 pixels per inch density is exactly the same as the original Samsung Galaxy S, which you can find knocking around for about £150 new.
The biggest downside to the Y300 is how little space there is for apps -- a minuscule 0.8GB. While you can expand the storage by 32GB with a microSD card, you can't install apps on that, just store photos and music and so on.
So in practice you'll be able to cram Facebook and Twitter on there, but very little else. If you're looking for a dirt-cheap second phone that can still surf the Web and support a few widgets, this could be a very good deal.
Not bad for a small upgrade!