$25 per class: not a bad price. Hopefully they won't have 40 people in the class, of varying skill levels! Ask about the number of students the class is "limited to". It makes a huge difference when it comes to the quality of instruction you'll get. Sometimes they get greedy and will fit in as many knitters as have a checkbook!
A Fair-Isle/Intarsia workshop I enrolled in several years ago was way way way overbooked. The teacher spent a lot of her time showing some knitters very elementary things, such as casting on, for example. (the class size was not her fault...she was a guest instructor at the LYS). It just sucked up the class instruction time terribly. That class was very expensive, and I feel I got robbed. It really turned me off on classes for a long time. Can you tell it still peeves me? That LYS is out of business now.
My current LYS recently lowered their classes to reflect $10 per hour. Still, paying for classes is hard for me to cough up, too.
But, your Aran Squares class sounds very interesting!!! :woot:
I took a Finishing Techniques class. Well worth the moolah.
IMHO any class that teaches 'techniques' is a class that keeps on giving and giving because you can carry the techniques over to so many other projects. It is a lifetime of skill.
Sometimes ya just have to bite the bullet and go for it!