I don't think this is anything new. You can look back in this subforum over the last few years and see posts for 25-30% off sales on all of the most popular products, and occasional 50% sales on more obscure items they want to blow out like silicone spatulas and hot pads.
I wanted another for the shop as I cook for the guys on Fridays a lot. With One being ten bones more than the classic, I went for it. Orange to match my toolbox. And in case you're wondering I keep a plain 22 kettle at the shop.
Can't wait to try out the new pen. I have a couple classics and a Mk4 so this will be fun.
The Thermapen One is very nice. I bought the Operation BBQ Relief version both because I support OBR and because I think the graphics liven up the appearance.
I hope to do a comparison - maybe even a video one - of the popular instant reads out there. In the meantime, I will say that I have long been - and still am - a proponent and even a fan of the attractively priced options from ThermoPro. They are a good company, with legitimate support. Their best products are solid performers. I will admit, though, when I got my Thermoworks Thermapen One I could immediately “feel” the difference. It is hard to describe but very real.
Not everyone needs a One, though. I will still say that the $15 ThermoPro TP-19H is very solid and will do all most users would ever realistically need. Now even available in three colors!
I don’t have an Mk4 to include in my comparison. It has the same solid build, so overall the main difference is a slightly faster reading. I personally can’t see replacing a working Mk4 unless you are really fanatical about it or just have extra money to splurge with.