The ornamental design for a sales counter, as shown and described.
FIG. 1 is a right front perspective view from above of the sales counter showing my new design, the left front perspective view from above being a substantial mirror image thereof;
FIG. 2 is a right elevational view of the sales counter of FIG. 1;
FIG. 3 is a left elevational view of the sales counter of FIGS. 1 and 2;
FIG. 4 is a right rear perspective view from above of the sales counter of FIGS. 1-3, the left rear perspective view from above being a substantial mirror image thereof;
FIG. 5 is a rear elevational view of the sales counter of FIGS. 1-4;
FIG. 6 is a front elevational view of the sales counter of FIGS. 1-5; and,
FIG. 7 is a top plan view of the sales counter of FIGS. 1-6.