Hi @shafi76bd ,
You may be able to repair it yourself ;-)
Here’s a link to a [http://www.samsungparts.com/Products/Parts_and_Accessories/SL-C460W/XAA/Default.aspx|supplier] of parts for the printer.
It lists the [http://www.samsungparts.com/Products/Parts_and_Accessories/PID-JB01-00002A.aspx?model=SL-C460W/XAA|platen glass (part #JB01-00002A )] and also a [http://www.samsungparts.com/Products/Parts_and_Accessories/PID-SM-SLC460W.aspx?model=SL-C460W/XAA|service manual (part # SM SLC460W/XAA)] which should show how to remove/replace the platen glass
For the platen glass at least, if the supplier doesn’t suit you, just search online using the part number ''only'' in the search term of your browser to get results for other suppliers of the part