I have the XL model and it can get pretty heavy with damp grass. I would hate to have the added weight of a steel one. They are made very well with quality materials and workmanship. Getting them on and off the mower is very quick and simple. I am buying another one in 2 days.
As an alternative, someone makes a plastic one but i dont know the company. I am sure it is cheaper than the Accel.
"Always do your best. What you plant now, you will harvest later."