First, Where are you located? (I don't mean location), but are you in a large city, east coast, weat coast, midwest, south?
The reason that I am asking is all of these factors have an impact on the costs related to starting and continuing to do business, ie., shipping, storage, etc.
Second, are you planning to deal with returns, overstocks, etc. because each kind of product has it's unique benefits and drawbacks. For example, if you are dealing with returns only - there may be some intensive 'clean-up, fix-up' time, not to mention that - 1 person - 10 pallets a month - single parent....
Please DO NOT lose heart, I am not trying to discourage.
I am also a single parent, usually buying truckloads. Each pallet is different... If you are only selling on eBay - it means checking each item, fixing, cleaning it, taking GOOD pictures, doing research (very important - better to lose a listing fee than go in the hole), creating a professional listing, etc.
Third, do you have the SPACE to store and sort, clean, fix the amount of stock that you purchase? If you have everything stacked in a corner, with no room to take it out and test/clean it is harder to get things going - although, I have found if I put it on my bed, I will take care of it before I can go to sleep (joking - sort of).
Please do not take anything I have said as a reason not to do this - I only want to prepare you for the harder side. If you are willing to make the effort, learn, and never give up - You will succeed.