The sterling does seem to have more sparkle to it. As for being expensive... It is several times the cost of nickel silver, but even in a cue with lots of silver rings - you're talking less than $100. Nickel silver avg $1.50 ea... Sterling - $3.50 to $7.50.
Kinda like tips... Always see people looking for the "best" price on a high quality tip. The very best tips are dirt cheap when you amortize cost over usage. How many hours do you get out of an $18 - $20 Everest, Kamui, Moori, etc!