Plenty

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The cheapest, most easily available one is the Dell AT101W. You can find them easily for $20 or less, or for free in some back room of many buildings. The switches aren't quite like other Alps switches though, and most people think they're the worst in the family. I think they're underrated, but still, I prefer other Alps switches.
A much more representative choice is a white Alps board; these make a great starting point for getting into Alps. Something like a Focus 2001 can be found easily and for $40 or less for sure. They come with nice doubleshot keycaps and sound delicious; the typing sound of Alps is in my opinion easily among the best of any switch series, and a key advantage to them. Note that there are many keyboards that can come with white Alps, but most of them, including the 2001, could come with other switches too, including clones that strongly resemble them. A more up-market version is a Northgate Omnikey which is a white Alps guarantee and which is built amazingly well, better than a Model M for sure. They're more expensive though.
If you like linear switches; many people rate yellow and especially green Alps very highly. Your best bet for these are old Zeniths, which aren't cheap, but not rare, and they're also built amazingly well.
If you're more into tactile switches, you might want to get an AEK. Fairly cheap, easy to find, and well-built, with dyesub PBT keycaps, but some level of Apple weirdness. Salmon and orange Alps are excellent switches.
Blue Alps are often considered the best in the series, but they're somewhat rare and come with a hefty price tag because of their strong reputation. Especially of late they have been going for unbelievable prices. My favourite board is blue Alps though, they're fantastic and sound divine.
Whatever you do MAKE SURE IT'S A CLEAN BOARD. Alps' biggest weakness is their vulnerability to dust and dirt. Genuinely, if they're dirty, don't buy them, the keyfeel WILL be rubbish and it will not be representative of Alps boards.
I have a huge amount of keyboard video reviews, including many on Alps boards. Go ahead and check them out if you're interested

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https://www.youtube.com/playlist?list=P ... MmLRKpmbfB