Buy movement options
A resistance-band set, one heavy kettlebell or adjustable dumbbell, a stable bench or step, and a floor mat cover a surprising amount of training. Start with the items that support your current plan rather than shopping for an imaginary future routine.
Spend on safety and load
A secure door anchor, reliable collars, stable handles, and adequate weight capacity deserve more attention than connected screens or novelty features. Used cast-iron weights can offer excellent value when inspected for cracks and damage.
Example budget
Allocate roughly half the budget to adjustable resistance, one quarter to a bench or sturdy step, and the remainder to bands, a mat, and storage. Prices vary by country and season, so use the percentages as a framework rather than a fixed shopping list.
Bottom line
Use this guidance as a framework, then adapt it to your experience, equipment, budget, and health needs. Sustainable choices are the ones you can repeat.