kits are a false economy tooling, manufacturing labour and transport costs are almost the same as ready to run models, then you have to pay for glue, paint, transfers, bearings, sometimes wheelsets tools such as micro drills, air brushes blades and handles.
Then you could make a total mess of it and have to start again that equals expensive and or disappointment.
So let someone do the hard work for you.
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The 1st question is how much are you prepared to pay for a ready to run model of say a Tara or cement bubble ?
The 2nd questions how many are you willing to buy ?