Retailers may “bundle”, but with the exception of the ice kits you are really buying a head unit (Echomap+, Echomap Ultra, or GPSMap) that will come bundled with different transducer and mapping options.
I don’t have experience pre-Livescope but the unit most popular as an entry point for Livescope is the 9″ Echomap + (93SV+). This unit will come with a 3 in 1 transducer (GT52) of ok quality covering 2d, SI, and DI. It also comes with US maps without having to buy an extra chip. As mentioned above Garmin provides A LOT of different options, but that also can be a bit confusing.
Echomap Plus – entry level
Echomap UHD – similar to Plus, “upgraded” transducer
Echomap Ultra – better screens, faster, etc. vs. entry level options
GPSMap – better units, higher cost. Available in touch & non-touch screen
Livescope (LVS32) is available and is sold with a black box to handle a lot of the image processing required. The PS30 and others mentioned by mojogunter don’t require the separate box.
Also, Garmin just announced a $200 rebate on all of their Livescope offerings. Good time to buy but also likely means an update is coming soon.