Hi Disney,
Honestly, I feel that many tour agencies are ripping tourists off. And the thing is sometimes it's not the fault of the tour agencies. I think many people who have not been to Europe before think that it's best to be kiasu. But they don't know what is best for themselves. So just because they see that a particular itinerary seems to cover more places, therefore it is better value for money.
Nothing could be further from the truth. Besides it being too rushed, due to the time constraints, you may end up seeing some of the sights just from the tour bus without even stepping out, and wasting time at other tourist attractions you'd rather not see. So it's far better to take your time. You're on holiday, what's the rush? There's no list of checkboxes to tick.
Honestly, we've been to Paris twice, but we still have not seen quite a few of the so-called must-see tourist attractions like Musee D'orsay, Moulin Rouge, etc. In fact, we didn't even bother to go up the Eiffel Tower, Arc de Troimphe, or Notre Dame. And we honestly only saw very little of the Louvre. But are we bothered? Not at all. Paris takes weeks, if not months to discover.
And honestly, some of the prettiest sites are not the touristy ones.
We now tend to head for places that the locals will go; e.g. street markets, parks, cemeteries! Yes it may sound morbid, but the cemeteries are very peaceful and pretty places to just walk around and look at some of the graves of famous people who chose to be buried in Paris.
There are lots more undiscovered gems but I leave you to find that on your own.