I got it for 61 euros and I have to say it's worth it a lot. It's quite sturdy and the height is okay. Of course, if someone wants to take them to move (e.g., for outdoor exercise) then they might not be very convenient because they are somewhat heavy and take up quite a bit of space. For inside the house, they are perfect.

Very good and high-quality product, I got it at a discounted price of €41. The height can be adjusted in 2 positions, at 79cm or 90cm. At 90cm, it is better because it is much more comfortable since you don't have to bend your legs too much when doing dips. The footrests on each side have a width of 40cm and are quite stable. For even greater stability, you can connect the two sides as shown in the photos and adjust it to a distance of 47cm to 62cm max, with 5 steps of 3cm each.
The diameter of the parallel bars is 32mm, which is satisfactory but could be slightly thicker, for example, 35-40mm. However, even at 32mm, it is fine.