OP's steep driveway.
I question the 30-degree guess, as that is very steep for a driveway. You can check it.
After reading this, I wondered about the steepness of my driveway. (Had previously guessed it to be ~15-degrees.) So I measured it by using a small level and adjustable protractor.
--Level held vertically against driveway.
--Adjustable protractor measured angle between vertical level and driveway.
Learned that my steepest-in-the-neighborhood driveway is ~8-degrees. Eight degrees is steep enough that my lawn-tractor-mounted snowblower, with chains, couldn't climb it well until after I built a differential lock. Even with a locked differential, the chains still slipped a little. How do I know? Because in the summer, I could see the marks of the slipping chains where they scratched my driveway. This was when I decided to get a track-driven snowblower.
All 2-wheeled snowblowers have locked differential, but I don't know the point (degree of steepness) at which chains are ineffective. I do know my lawn tractor chains were slipping enough at 8-degrees that I wanted a better solution.
If OP really has a 30-degree driveway, don't believe his candidate Lowes 26" wheel-driven Troy snowblower will climb it, even with chains. So buy it on the condition that it can be returned if it doesn't work well.
Another steep driveway owner: http://www.abbysguide.com/ope/discussio ... 9-1-1.html
Option. Mentioned in above was the ideal to get a four wheel snowblower. See: http://www.mytractorforum.com/19-cub-ca ... -ever.html
Think Cub Cadet use to make them. Haven't seen one recently.
Transporting heavy snowblower.
A few years back, local small-engine shop charged me $25 to pickup/return my snowblower when it failed to start. Seemed a reasonable charge for the service. Driver showed up with pickup and loading ramp. Was easy enough for both of us to push snowblower into truck.
Idea. Check with local small engine shops to see if they offer a pickup/return service for his snowblower. Can also get their recommendations on the snowblowers that seem to hold up best. (I used this idea when I bought my self-propelled lawnmower. Wanted one with a cheap/simple-to-repair transmission: Snapper mower with disc transmission.)
Clearing depth depends upon the height of the snowblower auger housing. If the snow is deeper than auger housing and the snow is sticking together, that first pass will be slow and painful. But the subsequent passes will be easier. Why?
Because you run the adjacent passes along the side of the snow bank and only take a small bite. This cuts a channel under the overhanging snow that your body will dislodge as you walk by. Pickup the dislodged snow on your next pass.
Option. Buy drift cutter(s) for your snowblower to handle deep snow. These are vertical metal bars attached to the vertical outside of your snowblower's auger housing. In use, as your snowblower cuts a small channel under a tall drift, the drift cutter cuts the overhanging top free and it falls in front of the auger.
See: http://www.snowblowersdirect.com/Simpli ... p7126.html
Note. If drift cutter mounted vertically, then cut off snow falls on top of and behind your snowblower. If drift cutters are mounted angled forward, cut off snow (is supposed to) falls in front of auger.
A snowblower with drift cutters handles deep snow like this.
--First pass through deep snowdrift. Will be painful.
--Second+ passes through deep snowdrift. Take a small bite out of snowdrift, drift cutter cuts off top that falls in front of auger.
--Repeat until done.
--Should be able to find a small engine shop that will pickup/return snowblower if it needs servicing OP can't perform.
--Can buy drift cutters to handle deep snow.
I believe OP’s biggest problem will be traction on a steep driveway. I'm confident OP will be satisfied with a track-driven model, new or used. I'm not certain anything less will work as well for him. (Mine was ~$350 on CL in summer of 2002. Have seen them more recently for ~$500; used Hondas are more expensive.) Haven’t seen any 4-wheel snowblowers recently, new or used.
Disclosure. I nickel-and-dimes my way to the track-drive solution for my moderately steep driveway: used corded electric single-stage snowblower + used small single-stage gas-powered snowblower + used lawn tractor mower/snowblower + chains + differential lock + used 5hp/24" Craftsman track-driven snowblower. I recommend OP not go this route as it is a waste of both time and money.