I have 2 bathroom sinks which have cracks starting at the drain and stretch to about 2 inches from drain. Closest to the drain are some cracks about 16th of an inch deep. We are trying to ready the house to sell and we can't afford to replace the sinks. More important things to replace. How could I go about repairing this? Please help!

Is this a sink counter top all in one piece?

Are you certain these are actually Corian and not cultured marble or some other synthetic material?

You will want to look at:

https://sites.google.com/site/coriartinc/Home/price-list/simple-permanent-crack-repair

I hope this helps