# My funds are stuck on a Layer-2 network because I can't pay the gas needed for transactions

If this happened to you do not despair, it's a common problem users face after bridging funds to a new network.\
\
On every network you need to own the native gas token to pay for transaction fees. On Optimistic rollups like Arbitrum and Optimism the gas token is $ETH and on sidechains like Polygon and Gnosis chain the gas token is $MATIC and $xDAI respectively.\
\
Below you will find some centralized exchanges (CEX) and fiat on-ramps to quickly get your hands on some of the needed cryptocurrencies on each network without paying high fees.

\
**Arbitrum ($ETH)**\
\- [Binance](https://www.binance.com/) (CEX)\
\- [Crypto.com](https://crypto.com/) (CEX)\
\- [Huobi](https://www.huobi.com/en-us/) (CEX)\
\- [Transak (Fiat on-ramp)](https://global.transak.com/)

**Optimism ($ETH)**\
\- [Binance](https://www.binance.com/) (CEX)\
\- [Crypto.com](https://crypto.com/) (CEX)\
\- [Huobi](https://www.huobi.com/en-us/) (CEX)\
\- [Transak (Fiat on-ramp)](https://global.transak.com/)

\
**Polygon ($MATIC)**\
\- [Binance](https://www.binance.com/) (CEX)\
\- [Crypto.com](https://crypto.com/) (CEX)\
\- [Huobi](https://www.huobi.com/en-us/) (CEX)\
\- [Ramp Network (Fiat on-ramp)](https://ramp.network/buy/)\
\- [Transak (Fiat on-ramp)](https://global.transak.com/)

*Tip: There's also the option to make a gasless swap of any token into $MATIC on* [*Polygon Wallet*](https://wallet.polygon.technology/gas-swap)

**Gnosis chain ($xDAI)**\
\- [Ramp Network (Fiat on-ramp)](https://ramp.network/buy/)\
\- [Mt Pelerin (Wallet w. Fiat on-ramp)](https://www.mtpelerin.com/)

*Tip: There are so-called "Faucets" like* [*Stakely*](https://stakely.io/faucet/xdai-chain) *or* [*Gimlu*](https://faucet.gimlu.com/gnosis) *which give you a tiny amount of **free xDAI** to pay for 1-2 transactions if you are stuck*<br>