You should be able to find switches with it already on there, but the cost is higher. Look for a part number with ending in E (IP services). If all you need is VLAN than go with LAN base which ends in L.
This is the datasheet on the 3750X. It’ll give you good details on the different models.
Here is one on ebay I came across with IP services.
https://www.ebay.com/itm/WS-C3750X-48P-S-WS-C3750X-48P-E-Catalyst-3750x-48P-S-IP-Services-License/164058141658?hash=item2632a093da:g:OsEAAOSwjLZeNEW3:sc:FedExHomeDelivery!20152!US!-1
All you would need to add is the 10G module card.