Official fee details for the college don't include any donation charges. Admission to their diploma courses is usually based on how well you did in your 10th-grade exams. Some places also say they admit students in the order they apply, as long as you meet the basic requirements.
I can provide you with the official fee information available for the Diploma in Electrical and Electronics Engineering at Sankara Polytechnic College, which is located in Coimbatore, Tamil Nadu.
For your first year, you can expect to pay around Rs.53,500. The total cost for the entire diploma will vary. If it's a regular 3-year course or a shorter 2-year course (if you join later), the total tuition could be anywhere from Rs.60,800 to Rs.1,18,000. If you opt for part-time studies, the yearly fee is likely to be about Rs.41,300.
Besides these main fees, there are some extra charges you'll need to budget for. When you apply, there's probably a small fee of around Rs.300. Once you get in, there's an admission fee of about Rs.4,000. You'll also need to pay for your uniform, which might cost around Rs.2,500. Each year, there will be additional charges for things like stationery and placement help, totaling around Rs.7,000. If you join any clubs, there's a semesterly fee of about Rs.2,000. If you plan to stay in the hostel, that will cost you roughly Rs.15,000 per year.
So, keep in mind that while the first-year fee is around Rs.53,500, the total cost will depend on the course duration and you'll need to factor in these extra charges for a complete picture.
I hope this helps.