Q: As a realty agent, I want to thank you for your recent item about the drawbacks of cutting home sales commissions below the customary rate in the community. My specialty is listings. I find working with buyers is much less productive (although I make exceptions for good referrals). I've been selling homes for 14 years and will ''negotiate'' the sales commission on expensive homes to remain competitive. However, I tactfully tell my sellers if I reduce my commission to 4 percent or 5 percent, the buyer's agents will show my listings last, only after showing the full-commission listings. Whether it's ethical or not, that's what happens. You might enjoy knowing about a recent full-commission, well-priced listing I had, which didn't get even one offer after 60 days on the market.