I would not listen to most dealers about the type of collimation tools you need. I was told a similar thing about the laser by staff at a scope shop
in Melbourne too. I was also told that once the scope is collimated, I should only ever need to make small adjustments on the secondary, yes the secondary! the small mirror near the focuser! I was told that when star testing I should be adjusting the three screws behind the secondary in the centre of the spider.
I am not kidding!! The guy showed me this in person and pointed out the adjustment screws for the secondary as the ones to tweak while star testing. He also told me not to touch the primary adjustment screws because that one stays put in transport, but the secondary goes out really easily. In case you don't know, this is all incorrect, back to front. See any good source on collimation, e.g.,
www.skyandtelescope.com. With this experience and their over inflated prices, they have lost me for good.
Cheshire/sighttube is the first collimation tool to get, and the only one you need. But a laser can be helpful in aligning the secondary. If you want one of those return beam lasers, they are on special at bintel for $79.