The following are some tips that can help you in negotiating with clients for higher prices:

1. Know the value you offer: Negotiating a higher price starts with knowing and communicating the value you offer to the client. Make sure that you can clearly explain how your product or service will help the client achieve their goals.

2. Describe the costs associated: Don't hesitate to explain the costs associated with your product or service, such as production costs or labor costs. This will help the client understand why your price is fair.

3. Provide options: Providing clients with multiple pricing options can help you in negotiations. For example, you can offer a standard plan and a premium plan at different prices. This will give clients the flexibility to choose a price that suits their budget.

4. Focus on the long term: Negotiating with a focus on the long term can help you get a higher price. Explain to the client that long-term cooperation will benefit both parties and that you can provide a better price in the long run.

5. Take time to listen; don't rush into negotiations. Take the time to hear and understand the client's needs before offering a solution. This will assist you in crafting a bid that fits your client's needs and strengthens your position in the negotiations.

These are some general tips that you can use in negotiating with clients for higher prices. Remember that every negotiating situation is unique, and you should adapt your strategy accordingly.