brokerage: % of transaction amount is rip-off vs fixed brokerage

One thing I never understood. Why do all brokerage firms charge brokerage as %(0.05-0.75%) of transaction amount?
I mean brokerage firms' efforts to purchase shares of 10 thousand Rs or 10 Lacs are same. Their software, infrastructure, manpower cost to them are same if I buy 100 or 10000 shares. Brokerage firm just does buying for me a stock and not managing it afterwords like mutual fund. They dont have to face any risk in my portfolio.
It will be appropriate for brokerage house to charge brokerage based on number of shares or per transacrion basis but not on transaction amount.
How come no one complained to authorities.
Recently some have started to charge fixed brokerage. But variable brokerage should not have been allowed at first place.
In US or other countries it is per share or per transaction basis.
It looks like rip-off for customers.

So wats the difference here in India????

rakamaka,
Who should not allow variable brokerage ,do mean to say any regulatory authority.Can they interfare ? We the customers can refuse to be a client with those type of broker house,if it is my wrong decision then flogging others is not descent.
Asish

You are absolutely right about the rip-off bit. The word must be spread.

When i receive a call from % brokerages offering 2 paisa, 3 paisa etc., i simply e-mail them a contract note of RK Global asking the caller if he/she can offer a better deal, and they never call back (Religare, Indiainfoline, Motilal Oswal, Indiabulls and some more).

It will be similar to
At petrol pump : Sir you are driving Mercedez you have to pay Rs 100/lit or 0.005% of your car value/lit
Next, sir you are driving Maruti Zen. Pay Rs 50/lit or 0.005% of your car value / lit.
The cost of petrol is same to the pump owner in both cases.

Yes I have the choice to go to fixed brokerage firm but people should realize the brokerage firms are playing games by 5,10 paisa or 0.5% games.

You're right. I guess things are changing and likely change for the better - ie., transaction based brokerage, and, not the amount. I can make only a guess about the % brokerage. In good old days, before the computerised trading, and, trade guarantee by exchanges, brokers were taking a lot of risk - may not need details. And so, brokerage as a % of the amount was justifiable. But then, all that risk has vanished now. And now, zero brokerage appearing to be a reality - commissions are likely to be transaction based, rather than amount. Let us hope for the best. As someone has pointed out, it is not the govt or any regulatory authority who can do anything on this. There is no MRP on brokerage, you see! The competition and markets will drive the brokerages towards commissions on transaction, and, not amount, as they do not take the risk today.

another way of cheating by icici
they mention rs 299/month but fineprint is transaction limit 150000/quarter. their ad implies it is rs 299/qtr
effectively rs 299 for 50000 transaction in total = 0.6%
which is slightly better than 0.75% but still worst.

senior members : can someone make list of flat rate brokers with grades to customerservice

R K Global charges are attaractive.

How is the server connectivity?

And exposure?

Currently I get 20 times....

Further, I am in the process of negotiating a fixed brokerage package, at 20,000 per month, will let u know how it works out.

Of course statutory charges will be paid at actuals

PS: are these charges by rk global applicable to cash market also?