I noticed the same thing, I just bought 4 TSL 2000 and got them just before the price went up. But I did notice that with these ones, they included the dimmer switch and also a timer and digital hygrometer/thermometer and a cool sheet of stickers with each one. All something I did not get when I bought my first 2 TSL 2000 last year. So I decide to heck with it, the extras make it work it and ordered the TSW 2000 I was wanting to replace the 2xSP250 I have in my 3x3. And with the 420magazine code it only really makes it $11 more.