Don't think that we are supposed to discuss prices here, but it was around mid-700ish.

I have the 45mm f/1.8 too. To me these are 2 different lenses. I'm a sucker for macro lenses as I think that macros are the best prime lenses to get. I don't shoot much insect macros but do like to take flower, human and pet close-ups and macro lenses are the best for this to me.
The 45mm is sharp but the 60mm is sharper. It is unbelievably sharp wide opened at f/2.8 and it is so difficult to find a lens that is so sharp at its largest aperture opening. It beats even the highly renowned ZD50mm f/2 as it is slightly sharper and much faster and quieter in autofocusing.
What the 45mm has going for it is that it is really cheap, compact, focuses faster and looks absolutely gorgeous on my silver OM-D body. Unfortunately, the 60mm only comes in black.