On sale for $29. Considering it. http://www.waves.com/bundles/gtr-solo

Thanks.

You can't go wrong for $29, particularly the Bass cabs. [Edit: I noticed it was GTR Solo, not the full GTR 3 - which I would snap up in a millisecond if it was $29! GTR Solo doesn't have as much stuff.]

GTR3 is a great sim.  It was a nice surprise when I picked up Gold

I was fortunate enough to get GTR with Waves Gold package at a real knockdown price. It's great, worth it for bass cabs alone as mentioned above, but tons of guitar stuff too.

I have saved myself a packet in buying a number of Waves plugins by keeping an eye on the Deals forum, and buying them from EveryPlugin.

Thanks for the comments. Looks like a good place to get started for $29. 

I got GTR 3 for the bass amps when it was on sale for $39.00 at after using a code at Everyplugin.com  This is great for Electric and Bass guitars.

I have the GTR3 and use the heck out of it.  Everything from amps to cabs to pedals and the tuner.
Not sure what's offered in Solo.

That's a decent deal for Solo, but unless you're hurting for amp-sims, I'd wait for the full version to go on sale.
 
I picked it up last year at Everyplugin for $24. This summer it was bundled free with CLA guitars for $39!
 
Waves has constant sales, so just keep an eye on the Deals sub-forum. 
 
*I just looked at everyplugin, and GTR3 Full is currently $49.89 with QDA63 discount code. 

Great comments/insight everyone. Never heard of everyplugin b4. I signed up and will watch, along with Waves sales, for full GTR3 to go on sale. Thanks all!

I think GTR3 has a lot of stompboxes and useful low CPU fx but I never really liked the actual amps/overdrive/distortion compared to S-Gear or even Amplitube or TH3.
Good tip about the bass cabs though, I haven't used those at all!