If it was sold for $165,000 but you had $15,000 of sales expenses, you will be taxed as if it was sold for $150,000. So the 15% long-term capital gain tax ($2250-ish) would not exist.
You also need to realize that you have been receiving income throughout the past 7 years. So the profitability of your 11 year investment is not only on the sales prices, but on the 11 years of rental income.
