I would highly recommend GFCI protection for both of you. My circuit uses a 30 amp GFCI breaker in the main box in my shop. I ran the wire and installed the conduit and outlet myself. Probably cost around $300 total to do so (GFCI breaker, 100' of 10/3, 10' of conduit, dryer outlet, misc. screws and straps). Do not skimp on safety. If you don't feel comfortable wiring it yourself, try talking to a couple other electricians if possible. I don't know your specific situation (wire length, construction type, etc.) but the quote from the electrician does seem like a lot.
If you can swing it buy the complete package with accessories including the digital control box. I really like having everything from the same company in the off chance you have an issue with something.
I had a reputable Electrical Contractor install a 240V 30A GFCI protected circuit, plus 5 extra 120 Volt 20 Amp circuits in my garage and the bill was $540...I would shop around, I am sure you can get it installed by a certified electrician cheaper than $900.
As far as DIY, even if you know what you are doing, I dont recommend it....in most jurisdictions doing your own electrical work (unless you are licensed) is illegal and must be disclosed when you go to sell the house. The liability is not worth a few hundred bucks...
Also for cost check out Brau Supply BIACs...you can even get it with the Brew Boss automated controller....