Condo sales activity continued to drive the Palm Beach market as the high-end single-family market, remained slow. There were 85 condo sales, the highest first-quarter total in four years and 4.9% more than in the same period last year. Condo listing inventory rose nominally by 0.6% to 332 resulting in a slower pace. The months of supply for condos, the number of months to sell all condo listings at the current rate of condo sales that closed in the quarter, was 11.7 months, 4.1% faster than the…