Asset managers Invesco and Galaxy will charge investors a 0.25% management fee on its proposed spot ether {{ETH}} exchange-traded fund (ETF) if and when it is rolled out.

This is just slightly higher than VanEck’s 0.20%, which was disclosed last month.

With eight issuers looking to launch an ether ETF at the same time, fees will play a critical role in differentiating a product from the others and appealing to investors. Grayscale’s higher-than-normal 1.5% fee on its bitcoin {{BTC}} trust caused it, among other reasons, to bleed billions of dollars while others saw mostly inflows.

Management fees are used by issuers to pay for the maintenance of a fund, such as for marketing costs, salaries and custodial services.

Most issuers for the spot bitcoin ETFs picked a fee between 0.19% and 0.30% which will likely be the case for their ether counterparts.

Read more: What ETF Approval Could Mean for Ethereum