You don't need TS studio or any other "package" for modelling

You will be charged 1.5k plus professional photos and "contacts"

These are same agencies you can find yourself quick Google search.

Buying white background prop and doing it yourself will be cheaper.

Cheap website subscription also you could do for your portfolio better than what they offered.

And most modelling companies you will be applying for only ask for basic phone photos anyway.

You pay for being lazy and acting out of fear/insecurity scarcity mindset.

Look at influencers already in the industry like dxavidkim for inspiration don't be stupid like me.