Hi. You have a great idea but you might have to do abit more research on things like pricing e.t.c. No one can give you the price that you should trade at. My suggestion is look at online retail prices, then you will subtract what you think your profit should be (usually at the 30% range) but you will have to remember overheads and include them on your expected costs. e.g. if a retailer is selling a dog bed at $35, expect to purchase it on wholesale at around $20-$25. As far as grouping the products is concerned, you will have to go for different suppliers of different items then put them together yourself, as happens with gift baskets. I have no idea bout dropshipping, but I'm sure more advice will be forthcoming from otehr cyber schmoozers.
Good luck!

"The wise man in the storm prays God, not for safety from danger, but for deliverance from fear."