If the CRM installation and integration was easy the cross-sell may have worked. Many clients ask about the ""free"" CRM. When I explain that ""free"" means at least $2K-$3K of installation and training for the bare minimum... and that is for one user and if everything goes perfect... they always take a pass.
Nobody installs and maintains SQL Server and CRM for one user. Realistically, to make fiscal sense, implementation would require additional users, extensive training, needs analysis, testing of the integration etc. Easily $10K+. @PeterWolf can provide better numbers.