I didn't say easier, I said it prevents your bottom case from getting all bent up. I suppose my method is slightly easier, but not by any significant margin. Either way, getting the top case off is the easy part, assuming you have the necessary screwdrivers to do it. It's dealing with the flex cable that connects the HDD, IR, and SIL to the logic board that's kind of tricky. Those flex cables will tear pretty easily if you're not careful. I've also seen people who don't know what they're doing go and try and take out a bunch of extra components around the HDD thinking they were necessary to get the HDD out.
Unless your unit has already taken its fair share of lumps over the years, and so cosmetics really aren't an issue, is it worth $70-100 to keep it looking nice? If you try and do it, without having ever done this before, I can pretty much guarantee you'll bend the bottom case in at least one spot, probably two or three. If you pay someone else to do it, and THEY bend the thing up, you can demand they replace it because the unit wasn't like that when you brought it in.
And over my hundreds of repairs I've learned quite a few tricks. Some of which I'll share, others I'll keep to myself. The one involving the top case is one I choose not to share. I don't share it because you have to know which models it can be used on and which it can't. On some models, using this method can damage a fragile plastic piece that requires a new logic board if broken. Even on the models where that's not a concern, you can still easily damage some other cables that will require a new top case if you're not careful. So, I keep this particular one to myself, lest it attract the cowboy type who acts now and might get around to considering the consequences two weeks from now.