For titans, a lot of the skills must be maxed out, to eliminate the possibility of losing the ship because you didn’t have that last 5% of armor or shields or whatever.
I estimate 80 million skill points (4 years Omega train time). 160 injectors. 40,000 PLEX. $1,400.
For the titan ship itself, Price Check 1, Price Check 2, 64 B ISK, 18,000 PLEX. $600.
For the fittings, no clue if this example is any good, but 15 B ISK. $150.